mirror of
https://github.com/plctlab/riscv-operating-system-mooc.git
synced 2025-11-16 12:34:47 +00:00
56 lines
1.2 KiB
Makefile
56 lines
1.2 KiB
Makefile
CROSS_COMPILE = riscv64-unknown-elf-
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CFLAGS = -nostdlib -fno-builtin -mcmodel=medany -march=rv32ima -mabi=ilp32 -g -Wall
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QEMU = qemu-system-riscv32
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QFLAGS = -nographic -smp 1 -machine virt -bios none
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GDB = ${CROSS_COMPILE}gdb
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CC = ${CROSS_COMPILE}gcc
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OBJCOPY = ${CROSS_COMPILE}objcopy
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OBJDUMP = ${CROSS_COMPILE}objdump
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SRCS_ASM = \
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start.S \
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SRCS_C = \
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kernel.c \
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OBJS = $(SRCS_ASM:.S=.o)
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OBJS += $(SRCS_C:.c=.o)
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.DEFAULT_GOAL := all
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all: os.elf
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# start.o must be the first in dependency!
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os.elf: ${OBJS}
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${CC} $(CFLAGS) -Ttext=0x80000000 -o os.elf $^
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${OBJCOPY} -O binary os.elf os.bin
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%.o : %.c
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${CC} ${CFLAGS} -c -o $@ $<
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%.o : %.S
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${CC} ${CFLAGS} -c -o $@ $<
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run: all
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@${QEMU} -M ? | grep virt >/dev/null || exit
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@echo "Press Ctrl-A and then X to exit QEMU"
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@echo "------------------------------------"
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@${QEMU} ${QFLAGS} -kernel os.elf
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.PHONY : debug
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debug: all
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@echo "Press Ctrl-C and then input 'quit' to exit GDB and QEMU"
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@echo "-------------------------------------------------------"
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@${QEMU} ${QFLAGS} -kernel os.elf -s -S &
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@${GDB} os.elf -q -x ../gdbinit
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.PHONY : code
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code: all
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@${OBJDUMP} -S os.elf | less
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.PHONY : clean
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clean:
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rm -rf *.o *.bin *.elf
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